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Reaction of phenyl phosphorodichloridate with pentane-2,4-diol affords a mixture of isomeric cyclic phosphates. These have been separated and characterized. Analysis of the 1H and 31P n.m.r. spectra of these derivatives has confirmed the stereospecificity of several sets of 31P–1H coupling constants.
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Hall et al. (1972) studied this question.
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